#!/bin/sh

NPROCS="$(grep -c "^processor.*:" /proc/cpuinfo)"
[ "$NPROCS" -gt 1 ] || exit

PROC_MASK="$(( (1 << $NPROCS) - 1 ))"

find_irq_cpu() {
    local dev="$1"
    local match="$(grep -m 1 "$dev\$" /proc/interrupts)"
    local cpu=0

    [ -n "$match" ] && {
        set -- $match
        shift
        for cur in $(seq 1 $NPROCS); do
            [ "$1" -gt 0 ] && {
                cpu=$(($cur - 1))
                break
            }
            shift
        done
    }

    echo "$cpu"
}

set_hex_val() {
    local file="$1"
    local val="$2"
    val="$(printf %x "$val")"
    [ -n "$DEBUG" ] && echo "$file = $val"
    echo "$val" > "$file"
}

packet_steering="$(uci get "network.@globals[0].packet_steering")"
[ "$packet_steering" != 1 ] && exit 0

exec 512>/var/lock/smp_tune.lock
flock 512 || exit 1

for dev in /sys/class/net/*; do
    [ -d "$dev" ] || continue

    # ignore virtual interfaces
    [ -n "$(ls "${dev}/" | grep '^lower_')" ] && continue
    [ -d "${dev}/device" ] || continue

    device="$(readlink "${dev}/device")"
    device="$(basename "$device")"
    irq_cpu="$(find_irq_cpu "$device")"
    irq_cpu_mask="$((1 << $irq_cpu))"

    for q in ${dev}/queues/tx-*; do
        set_hex_val "$q/xps_cpus" "$PROC_MASK"
    done

    # ignore dsa slave ports for RPS
    subsys="$(readlink "${dev}/device/subsystem")"
    subsys="$(basename "$subsys")"
    [ "$subsys" = "mdio_bus" ] && continue

    for q in ${dev}/queues/rx-*; do
        set_hex_val "$q/rps_cpus" "$PROC_MASK"
    done
done

#!/bin/sh

log() {
    logger -t "NET" "$@"
}

NP=$(grep -c ^processor /proc/cpuinfo )
if [ "$NP" -gt 1 ]; then
    log "hotplug (iface): action='$ACTION' interface='$INTERFACE'"
    if [ "$ACTION" = "add" ]; then
        IFACE=$(ls /sys/class/net)
        for i in ${IFACE}; do
            ethtool -K $i gro on 2>/dev/null
            if [[ -e /sys/class/net/$i/queues/rx-0/rps_cpus ]]; then
                echo f > /sys/class/net/$i/queues/rx-0/rps_cpus
            fi
        done
        
        INTERRUPT=$(ls /proc/irq/ | sed '/default/d')
        USB3_NUMBER=$(grep xhci /proc/interrupts | awk -F: '{print $1}' | sed 's/^ //')

        for i in ${INTERRUPT}; do
            if [[ $i = ${USB3_NUMBER} ]]; then
                echo f > /proc/irq/$i/smp_affinity 2>/dev/null
            else
                echo e > /proc/irq/$i/smp_affinity 2>/dev/null
            fi
        done

        #inter=$(grep . /sys/class/net/$INTERFACE/queues/?x-0/?ps_cpus)
        #log "$inter"
    fi
fi